“…[21][22][23][24] After sonication and separation of the precipitates, the fluorescence emitted from Ga@C-dots in the supernatant solution was recorded at different excitation wavelengths (330, 350, 370, 390, 410, 430, 450, 470, and 490 nm). The results that were obtained from Ga@C-dots which were produced in the presence of different amounts of Ga (70, 175, 350, and 700 mg) were identical to those in our previous reports 21 (data not shown).…”